一、导言目前除了少数酋长国以外,节能是大多数国家最优先考虑的国家课题。在热带国家,巨大能量消耗的一部分是来自于城市家庭、办公室、工厂、医院等场所所需的制冷和空调。像纽约这样的城市在夏季有巨大的动力消耗是众所周知的。由于适宜的环境空气条件,对于舒适和良好的工作十分重要,故不能完全节约这些负荷消耗。 I. INTRODUCTION With the exception of a handful of emirates, energy conservation is a top national priority in most countries. In tropical countries, part of the huge energy consumption comes from refrigeration and air conditioning needed in urban homes, offices, factories, hospitals and other places. Cities like New York have a huge power consumption in the summer is well known. Due to the proper ambient air conditions, which are important for comfort and good work, these load-shedding can not be completely saved.